![]() Some periodic tables may provide additional information, such as the element's name, electron configuration, or chemical properties. Read element information: Each element's square on the periodic table usually contains its symbol, atomic number, and atomic mass. For example, noble gases are often shown in a different color, and lanthanides and actinides are placed below the main table. Use color coding and element blocks: The periodic table may include color coding and different element block shapes to indicate specific categories or properties of elements. Elements in the same group often have similar chemical properties and valence electron configurations. Elements on the left side of the table are metals, while elements on the right side are nonmetals. Understand element properties: The periodic table provides information about various element properties. For example, hydrogen (H) has an atomic number of 1 and is placed in the first row on the far left, while uranium (U) has an atomic number of 92 and is placed in the seventh period towards the bottom. Atomic numbers increase from left to right and from top to bottom. Locate elements by atomic number: The atomic number of an element determines its position on the periodic table. Some groups also have specific names, such as the alkali metals in Group 1 or the halogens in Group 17. Groups are numbered from 1 to 18 and represent elements with similar properties. Identify periods and groups: The periodic table has seven periods, numbered from 1 to 7, representing the energy levels or electron shells of the elements. Each element in the table was represented with a symbol and placed in a specific location based on its atomic number and electron configuration. Understand the layout: It is organized in rows called periods and columns called groups.
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